There are a few tools but a couple are listed in the docs: https://accruent.github.io/robotframework-zoomba/DesktopLibraryDocumentation.html
Namely you could use Accessibility insights for ids, class, name, etc and the WinAppDriver UI Recorder to get an xpath
That format button seems to just have a Name to use:
So you could click this via something like:
Click Element name=Format